Hi, newbie here, we raised our first chicks last year and gained more chicks this year. We have them in 2 coops next to each other, so that they are used to seeing each other. We have one rooster from last year, he can a bit of a bully (chasing and pecking) first thing in the morning until he has jumped on a couple of the hens. My first concern is that he will bully/jump on the new hens when I put them in together. My second worry is when to put them in together as the hens from last year are on layer mix and the chicks are on starter. We also have feather loss with all the chickens from last year, neck and bums (inc the rooster). Any advice please!